[PATCH erofs-utils v2 1/2] erofs-utils: fix swapped hi/lo in 48-bit primary blocks read

[Gao Xiang]

On 2026/4/3 21:05, Zhan Xusheng wrote:
> erofs_read_superblock() combines the 48-bit primary device block count as:
>      (primarydevice_blocks << 32) | blocks_hi
> 
> This places blocks_lo in the upper 32 bits and blocks_hi in the lower
> 16 bits, which is reversed.  The correct combination is:
>        primarydevice_blocks | ((u64)blocks_hi << 32)
> 
> This is the same bug that was fixed in the Linux kernel by commit
> 0b96d9bed324 ("erofs: fix block count report when 48-bit layout is
> on").  Apply the equivalent fix to erofs-utils.
> 
> Fixes: f5b492b27e53 ("erofs-utils: add 48-bit block addressing support")
> Signed-off-by: Zhan Xusheng <zhanxusheng at xiaomi.com>
I wonder if it's the AI hallucination.  Anyway, I fixed the
commit message as below and applied:

erofs-utils: lib: fix block count report when 48-bit layout is on

Source kernel commit: 0b96d9bed324a1c1b7d02bfb9596351ef178428d

Fixes: eeceb2289513 ("erofs-utils: implement 48-bit block addressing for unencoded inodes")
Signed-off-by: Zhan Xusheng <zhanxusheng at xiaomi.com>
Signed-off-by: Gao Xiang <hsiangkao at linux.alibaba.com>